Outer cladding metal nearby the fusion interface of roll mandrel experienced the process of solidification-fusion-re-solidification.
辊芯熔合界面附近的外层金属先后经历了凝固、熔化、再凝固的过程。
It was possible the rods' metal cladding had melted, exposing the radioactive core, a spokesman said.
一位发言人声称燃料棒的金属镀层可能已经溶毁，暴露出放射性核芯。
Instead the researchers use two layers of graphite-rich conductive plastic, each flanked by a single metal strip in the inner and outer cladding.
所以研究人员用了两层石墨含量较高的传导性塑料，每层塑料内外层的侧面都有一条金属带。
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